No health-based violations on EPA record since 2016.
Serves about 4,941 people (1,647 connections) with groundwater from its own wells, and buys water from City of Houston.
From EPA's record for TX1010331. PurityMap is independent of North Green MUD.
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No health-based violations in the last 10 years, from EPA's SDWIS compliance database.
EPA required this system to test for 30 unregulated and emerging contaminants, from January 2024 to November 2024.
| Contaminant | Result | Limit | Status | Sampled | Source |
|---|---|---|---|---|---|
| Lithium | 15.4 µg/L | 10 µg/L EPA health reference level (screening, not a legal limit)Screening level, not a legal limit | Above the referenced health-based guidance value | 2024-01-18 to 2024-11-19 | UCMR5 Analytical Results: NORTH GREEN MUD (TX1010331) |
| 11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-18 to 2024-11-19 | UCMR5 Analytical Results: NORTH GREEN MUD (TX1010331) |
| 1H, 1H, 2H, 2H-perfluorodecane sulfonic acid (8:2 FTS) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-18 to 2024-11-19 | UCMR5 Analytical Results: NORTH GREEN MUD (TX1010331) |
| 1H, 1H, 2H, 2H-perfluorohexane sulfonic acid (4:2 FTS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-18 to 2024-11-19 | UCMR5 Analytical Results: NORTH GREEN MUD (TX1010331) |
| 1H, 1H, 2H, 2H-perfluorooctane sulfonic acid (6:2 FTS) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-18 to 2024-11-19 | UCMR5 Analytical Results: NORTH GREEN MUD (TX1010331) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-18 to 2024-11-19 | UCMR5 Analytical Results: NORTH GREEN MUD (TX1010331) |
| 9-Chlorohexadecafluoro-3-oxanone-1-sulfonic acid (9Cl-PF3ONS) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-18 to 2024-11-19 | UCMR5 Analytical Results: NORTH GREEN MUD (TX1010331) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-01-18 to 2024-11-19 | UCMR5 Analytical Results: NORTH GREEN MUD (TX1010331) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-18 to 2024-11-19 | UCMR5 Analytical Results: NORTH GREEN MUD (TX1010331) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-18 to 2024-11-19 | UCMR5 Analytical Results: NORTH GREEN MUD (TX1010331) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-18 to 2024-11-19 | UCMR5 Analytical Results: NORTH GREEN MUD (TX1010331) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-18 to 2024-11-19 | UCMR5 Analytical Results: NORTH GREEN MUD (TX1010331) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-18 to 2024-11-19 | UCMR5 Analytical Results: NORTH GREEN MUD (TX1010331) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-18 to 2024-11-19 | UCMR5 Analytical Results: NORTH GREEN MUD (TX1010331) |
| Perfluorobutanesulfonic acid (PFBS) | < 3 ng/L | 2,000 ng/L EPA health advisory (screening, not a legal limit)Screening level, not a legal limit | Not detected above the reporting limit | 2024-01-18 to 2024-11-19 | UCMR5 Analytical Results: NORTH GREEN MUD (TX1010331) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-18 to 2024-11-19 | UCMR5 Analytical Results: NORTH GREEN MUD (TX1010331) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-18 to 2024-11-19 | UCMR5 Analytical Results: NORTH GREEN MUD (TX1010331) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-18 to 2024-11-19 | UCMR5 Analytical Results: NORTH GREEN MUD (TX1010331) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-18 to 2024-11-19 | UCMR5 Analytical Results: NORTH GREEN MUD (TX1010331) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-18 to 2024-11-19 | UCMR5 Analytical Results: NORTH GREEN MUD (TX1010331) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-01-18 to 2024-11-19 | UCMR5 Analytical Results: NORTH GREEN MUD (TX1010331) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2024-01-18 to 2024-11-19 | UCMR5 Analytical Results: NORTH GREEN MUD (TX1010331) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-01-18 to 2024-11-19 | UCMR5 Analytical Results: NORTH GREEN MUD (TX1010331) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-01-18 to 2024-11-19 | UCMR5 Analytical Results: NORTH GREEN MUD (TX1010331) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-01-18 to 2024-11-19 | UCMR5 Analytical Results: NORTH GREEN MUD (TX1010331) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-18 to 2024-11-19 | UCMR5 Analytical Results: NORTH GREEN MUD (TX1010331) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-18 to 2024-11-19 | UCMR5 Analytical Results: NORTH GREEN MUD (TX1010331) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-18 to 2024-11-19 | UCMR5 Analytical Results: NORTH GREEN MUD (TX1010331) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-18 to 2024-11-19 | UCMR5 Analytical Results: NORTH GREEN MUD (TX1010331) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-18 to 2024-11-19 | UCMR5 Analytical Results: NORTH GREEN MUD (TX1010331) |
Screening tells you if something is worth a closer look; a lab result is the number you can act on.
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Screening: quick check, not lab-grade
Safe Home (EnviroTestKits)
Lead, read as one of three ranges: 0–4, 5–15 or 15+ ppb
Turnaround: 5 minutes
What it can't tell you: It shows a lead range, not an exact level, and tests nothing else unless you pay extra for the optional lab test.
Lab-certified results
ETR Laboratories
50+ substances, including lead, copper, arsenic, nitrate, hardness and coliform bacteria
Environmental Testing and Research Laboratories (ETR Labs), Leominster, MA · ISO/IEC 17025:2017, ANAB certificate AT-2638 · 2–4 business days after the lab receives it
What it can't tell you: It does not test PFAS, and not every result on the panel falls under the lab's accredited scope.
Get PurityMap updates about this water system.
Follow this water →North Green MUD's phone number on EPA record is 281-272-6134. Its mailing address is 1301 MCKINNEY ST STE 5100, HOUSTON, TX 77010-3095.
According to EPA's record, North Green MUD uses groundwater from its own wells, and buys water from City of Houston.
No health-based violations on EPA record since 2016. EPA also lists 2 missed or late tests or reports in 10 years. The record comes from EPA's SDWIS compliance database.
Lead was not detected at the 90th percentile of tap samples in North Green MUD's latest lead and copper round, which ended in December 2025. The federal action level is 15 µg/L.
PurityMap has no verified website for North Green MUD. Its phone number on EPA record is 281-272-6134. Its mailing address on EPA record is 1301 MCKINNEY ST STE 5100, HOUSTON, TX 77010-3095. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.